Webster’s Revised Unabridged Dictionary · 1913
Pectic
Pec′tic (pĕk′tĭk), a. [Gr. πηκτός curdled.] (Chem.) Of or pertaining to pectin; specifically, designating an acid obtained from ordinary vegetable jelly (pectin) as an amorphous substance, tough and horny when dry, but gelatinous when moist.